C C N A Day5

1. Backup and Restore

2. Cisco IOS File System and Devices

3. Managing Cisco IOS Images

4. Verifying Memory Image Filenames wg_ro_a# show flash System flash directory: File Length Name/status 1 10084696 c2500-js-l_120-3.bin [10084760 bytes used, 6692456 available, 16777216 total] 16384K bytes of processor board System flash (Read ONLY)

5. Creating a Software Image Backup

6. Upgrading the Image from the Network

14. WANs

19. WAN technology/terminology A demarcation point is where customer premises equipment (CPE) ends, and local loop begins. The local loop is the cabling from demarcation point to Central Office (CO).

30. Integrated Services Digital Network

37. Max. WAN Speeds for WAN Connections E3/T3 Leased Line / Frame Relay E1 / T1 ISDN – PRI 128 Kbps X.25, ISDN – BRI 56-64 Kbps Asynchronous Dial-Up Maximum Speed WAN Type

38. Typical WAN Encapsulation Protocols: Layer 2 Leased Line Circuit-switched PPP, SLIP, HDLC HDLC, PPP, SLIP Packet-switched X.25, Frame Relay, ATM Telephone Company Service Provider

43. PPP LCP Configuration Options Feature How It Operates Protocol Authentication PAP CHAP Perform Challenge Handshake Require a password Compression Compress data at source; reproduce data at destination Error Detection Avoid frame looping Monitor data dropped on link Multilink Load balancing across multiple links Multilink Protocol (MP)

47. Configuring PPP and Authentication Overview Service Provider Verify who you are. Router to Be Authenticated (The router that initiated the call.) ppp encapsulation hostname username / password ppp authentication Authenticating Router (The router that received the call.) ppp encapsulation hostname username / password ppp authentication Enabling PPP Enabling PPP Authentication Enabling PPP Enabling PPP Authentication        

52. Verifying HDLC and PPP Encapsulation Configuration Router#show interface s0 Serial0 is up, line protocol is up Hardware is HD64570 Internet address is 10.140.1.2/24 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation PPP, loopback not set, keepalive set (10 sec) LCP Open Open: IPCP, CDPCP Last input 00:00:05, output 00:00:05, output hang never Last clearing of "show interface" counters never Queueing strategy: fifo Output queue 0/40, 0 drops; input queue 0/75, 0 drops 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 38021 packets input, 5656110 bytes, 0 no buffer Received 23488 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 38097 packets output, 2135697 bytes, 0 underruns 0 output errors, 0 collisions, 6045 interface resets 0 output buffer failures, 0 output buffers swapped out 482 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up

54. What is ISDN? Provider network Digital PBX Small office Home office Voice, data, video Telecommuter Central site

58. Interfaces and Devices TE1 TE2 TA NT1 2W 4W ISDN Ready BRI Port Analog devices: phone, Serial port After connecting to TA it becomes TE1 S/T interface U interface ISDN Switch

59. Interfaces and Devices Function Group – A set of functions implemented by a device or software Reference Point – The interface between two function group

60. Reference Points

61. LAB-ISDN E0 Router(config)#hostname R1 R1(config)#username R2 password cisco R1(config-if)#int bri 0 R1(config-if)# ip address 10.0.0.1 255.0.0.0 R1(config-if)#enacapsulation ppp R1(config-if)#PPP authentication CHAP R1(config-if)#no shut Static Routes or default route R1(config)#ip route 0.0.0.0 0.0.0.0 10.0.0.2 R1(config)#isdn switch-type basic-net3 Access List R1(config)#dialer-list 1 protocol ip permit R1(config)#int bri 0 R1(config-if)# dialer–group 1 R1(config-if)#dialer map ip 10.0.0.2 name R2 20 R1(config-if)#no shut R1(config-if)#dialer idle-timeout 100 192.168.0.2 192.168.1.2 R2 ISDN Switch BRI 192.168.1.1 R1 E0 BRI 192.168.0.1 10.0.0.1 10.0.0.2

62. ISDN DDR configuration Commands Global command that selects BRI interface int bri 0 Interface subcommand that define dial numbers dialer string number Interface subcommand that settles idle time out values dialer idle-timeout 100 Interface subcommand that references dialer list to define what is interesting dialer–group 1 Global command that creates a dialer list that makes all IP traffic interesting or reference to ACL for subset dialer-list 1 protocol IP Global command that creates ACL’s to define a subset of traffic as interesting access-list Global command that configure CHAP username and password username name name password secret Global command that configure static route or default route iproute Description Command

67. LAB - Frame Relay 192.168.1.2/24 192.168.2.2/24 R2 FR Switch S0 192.168.2.1/24 R1 E0 S0 192.168.1.1/24 192.168.3.9/29 E0 100 200 192.168.3.10/29 DCE DCE Frame Relay Switch Router#config t Router(config)#hostname FRSwitch FRSwitch(config)# frame-relay switching FRSwitch(config)# int s 1/0 FRSwitch(config-if)#enacapsulation frame-relay FRSwitch(config-if)# frame-relay intf-type DCE FRSwitch(config-if)# clock rate 64000 FRSwitch(config-if)# frame-relay route 100 int serial 1/1 200 FRSwitch(config-if)#no shut R1 Router#config t Router(config)#hostname R1 R1(config)# int s 0 R1(config-if)#ip address 192.168.3.9 255.255.255.248 R1(config-if)#enacapsulation frame-relay R1(config-if)# frame-relay intf-type DTE R1(config-if)# frame-relay interface-dlci 100 R1(config-if-dlci)# exit R1(config-if)#framerelay map ip 192.168.3.10 100 R1(config-if)#no shut